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Titolo:
Root responses to cereal cyst nematode (Heterodera avenae) in hosts with different resistance genes
Autore:
Seah, S; Miller, C; Sivasithamparam, K; Lagudah, ES;
Indirizzi:
CSIRO, Canberra, ACT 2601, Australia CSIRO Canberra ACT Australia 2601CSIRO, Canberra, ACT 2601, Australia Univ Western Australia, Fac Agr, Nedlands, WA, Australia Univ Western Australia Nedlands WA Australia gr, Nedlands, WA, Australia
Titolo Testata:
NEW PHYTOLOGIST
fascicolo: 3, volume: 146, anno: 2000,
pagine: 527 - 533
SICI:
0028-646X(200006)146:3<527:RRTCCN>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
WHEAT; BARLEY; SYNCYTIA; CLONING; LOCUS; WOLL;
Keywords:
Heterodera avenae (Cereal cyst nematode); Triticum aestivum (wheat); Hordeum vulgare (barley); Aegilops tauschii; disease resistance genes; syncytium; root cellular response;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Lagudah, ES CSIRO, GPO Box 1600, Canberra, ACT 2601, Australia CSIRO GPO Box 1600 Canberra ACT Australia 2601 2601, Australia
Citazione:
S. Seah et al., "Root responses to cereal cyst nematode (Heterodera avenae) in hosts with different resistance genes", NEW PHYTOL, 146(3), 2000, pp. 527-533

Abstract

The development of cereal cyst nematode (CCN; Heterodera avenae) induced syncytia in the host roots of infected resistant bread wheat (Triticum aestivum cv. AUS10894), diploid wheat (Aegilops tauschii), barley (Hordeum vulgare cv. Chebec and cv. Galleon) and in the susceptible wheat cv. Meering andbarley cv. Clipper were studied over a period of 13 d. The resistance to CCN in these cereal plants is conferred by the resistance genes Cre1 in the wheat cv. AUS10894, Cre3 in A. tauschii, Ha2 in barley cv. Chebec and Ha4 in barley cv. Galleon. Anatomical observations were made on the development of the syncytia in CCN-infected wheat and barley roots, which carry each ofthese four sources of resistance genes. Accelerated development of the syncytia in resistant plants, especially in the barley cultivars, was observed. The sites of syncytia development in susceptible wheat and barley were also closely associated with the vascular tissues in the stele, but less so in the resistant plants. The syncytia in the infected susceptible wheat and barley were also metabolically active at day 13. By contrast, the syncytia of resistant wheat plants carrying the Cre1 or Cre3 genes remained extensively vacuolated and less metabolically active. In barley plants with the Ha2or Ha4 genes, the syncytia appeared non-functional and in early stages of degeneration by day 13 after inoculation.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/07/20 alle ore 14:43:00